EP1600941A4 - DIP FILTER FREQUENCY CHARACTERISTIC DECISION METHOD - Google Patents

DIP FILTER FREQUENCY CHARACTERISTIC DECISION METHOD

Info

Publication number
EP1600941A4
EP1600941A4 EP04714019A EP04714019A EP1600941A4 EP 1600941 A4 EP1600941 A4 EP 1600941A4 EP 04714019 A EP04714019 A EP 04714019A EP 04714019 A EP04714019 A EP 04714019A EP 1600941 A4 EP1600941 A4 EP 1600941A4
Authority
EP
European Patent Office
Prior art keywords
frequency characteristic
amplitude frequency
dip
decision method
filter frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04714019A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1600941A1 (en
EP1600941B1 (en
Inventor
Daisuke Higashihara
Shokichiro Hino
Koichi Tsuchiya
Tomohiko Endo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toa Corp
Etani Electronics Co Ltd
Original Assignee
Toa Corp
Etani Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toa Corp, Etani Electronics Co Ltd filed Critical Toa Corp
Publication of EP1600941A1 publication Critical patent/EP1600941A1/en
Publication of EP1600941A4 publication Critical patent/EP1600941A4/en
Application granted granted Critical
Publication of EP1600941B1 publication Critical patent/EP1600941B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/007—Monitoring arrangements; Testing arrangements for public address systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H13/00—Measuring resonant frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2227/00—Details of public address [PA] systems covered by H04R27/00 but not provided for in any of its subgroups
    • H04R2227/007—Electronic adaptation of audio signals to reverberation of the listening space for PA

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

共鳴空間で検出された共鳴周波数f2,f3をディップの中心周波数として決定する。共鳴空間のスピーカとマイクロホンでの測定値に基づき、基礎振幅周波数特性Caと目標振幅周波数特性Cdを求める。目標振幅周波数特性Cdは、基礎振幅周波数特性Caよりも周波数軸上での平滑度が大きい。ディップの減衰レベル、尖鋭度は、ディップの中心周波数f2,f3およびその近傍の周波数における、基礎振幅周波数特性Caと目標振幅周波数特性Cdとの差に基づき決定する。
EP04714019A 2003-02-27 2004-02-24 Dip filter frequency characteristic decision method Expired - Lifetime EP1600941B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2003051147A JP3920233B2 (ja) 2003-02-27 2003-02-27 ディップフィルタの周波数特性決定方法
JP2003051147 2003-02-27
PCT/JP2004/002141 WO2004077402A1 (ja) 2003-02-27 2004-02-24 ディップフィルタの周波数特性決定方法

Publications (3)

Publication Number Publication Date
EP1600941A1 EP1600941A1 (en) 2005-11-30
EP1600941A4 true EP1600941A4 (en) 2008-07-16
EP1600941B1 EP1600941B1 (en) 2010-04-28

Family

ID=32923359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04714019A Expired - Lifetime EP1600941B1 (en) 2003-02-27 2004-02-24 Dip filter frequency characteristic decision method

Country Status (5)

Country Link
US (1) US7787635B2 (ja)
EP (1) EP1600941B1 (ja)
JP (1) JP3920233B2 (ja)
DE (1) DE602004026836D1 (ja)
WO (1) WO2004077402A1 (ja)

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JP2006287851A (ja) * 2005-04-05 2006-10-19 Roland Corp ハウリング防止装置
JP4899897B2 (ja) * 2006-03-31 2012-03-21 ソニー株式会社 信号処理装置、信号処理方法、音場補正システム
US8150069B2 (en) * 2006-03-31 2012-04-03 Sony Corporation Signal processing apparatus, signal processing method, and sound field correction system
JP4974708B2 (ja) * 2007-02-28 2012-07-11 オンセミコンダクター・トレーディング・リミテッド 雑音抑圧装置、受信装置
US8194874B2 (en) * 2007-05-22 2012-06-05 Polk Audio, Inc. In-room acoustic magnitude response smoothing via summation of correction signals
JP4786701B2 (ja) * 2008-12-26 2011-10-05 株式会社東芝 音響補正装置、音響測定装置、音響再生装置、音響補正方法及び音響測定方法
ES1071646Y (es) * 2009-10-30 2010-06-17 Genuix Audio S L Dispositivo de control de calidad de megafonia
JP2011254144A (ja) * 2010-05-31 2011-12-15 Yamaha Corp 録音方法、この録音方法によりオーディオ信号が記録された記録媒体、およびオーディオ信号の配信方法
EP2727379B1 (en) * 2011-07-01 2015-02-18 Dolby Laboratories Licensing Corporation Equalization of speaker arrays
US9036825B2 (en) * 2012-12-11 2015-05-19 Amx Llc Audio signal correction and calibration for a room environment
JP6540090B2 (ja) * 2015-02-25 2019-07-10 富士通株式会社 受信装置及び送信装置
US11289070B2 (en) 2018-03-23 2022-03-29 Rankin Labs, Llc System and method for identifying a speaker's community of origin from a sound sample
US11341985B2 (en) * 2018-07-10 2022-05-24 Rankin Labs, Llc System and method for indexing sound fragments containing speech
JP7184656B2 (ja) * 2019-01-23 2022-12-06 ラピスセミコンダクタ株式会社 故障判定装置及び音出力装置
US11699037B2 (en) 2020-03-09 2023-07-11 Rankin Labs, Llc Systems and methods for morpheme reflective engagement response for revision and transmission of a recording to a target individual
CN115060355B (zh) * 2022-04-12 2024-03-26 东南大学 一种基于线性调频脉冲的谐振子品质因数测量方法

Citations (5)

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GB2293078A (en) * 1994-09-09 1996-03-13 Yamaha Corp Howling remover composed of adjustable equalizers for attenuating complicated noise peaks
US5815580A (en) * 1990-12-11 1998-09-29 Craven; Peter G. Compensating filters
EP1001652A2 (en) * 1998-11-13 2000-05-17 Texas Instruments Incorporated Automatic loudspeaker equalizer
US6072879A (en) * 1996-06-17 2000-06-06 Yamaha Corporation Sound field control unit and sound field control device
US6125187A (en) * 1997-10-20 2000-09-26 Sony Corporation Howling eliminating apparatus

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US3624298A (en) * 1969-03-05 1971-11-30 Ltv Ling Altec Inc Sound-improving means and method
US4232192A (en) * 1978-05-01 1980-11-04 Starkey Labs, Inc. Moving-average notch filter
JPS5994994A (ja) 1982-11-22 1984-05-31 Matsushita Electric Ind Co Ltd ハウリング抑圧装置
US5581621A (en) * 1993-04-19 1996-12-03 Clarion Co., Ltd. Automatic adjustment system and automatic adjustment method for audio devices
US6760451B1 (en) * 1993-08-03 2004-07-06 Peter Graham Craven Compensating filters
JPH0819088A (ja) 1994-06-30 1996-01-19 Sony Corp 音響処理方法
JPH09275597A (ja) 1996-04-05 1997-10-21 Sony Corp ハウリング防止回路及び装置
US6067362A (en) * 1997-04-24 2000-05-23 Bose Corporation Mechanical resonance reducing
JP3935290B2 (ja) * 1999-06-11 2007-06-20 ティーオーエー株式会社 音声放送装置
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US6876750B2 (en) * 2001-09-28 2005-04-05 Texas Instruments Incorporated Method and apparatus for tuning digital hearing aids
JP3920226B2 (ja) * 2002-12-09 2007-05-30 ティーオーエー株式会社 共鳴周波数検出方法、共鳴周波数選択方法、および、共鳴周波数検出装置
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US7266205B2 (en) * 2003-01-13 2007-09-04 Rane Corporation Linearized filter band equipment and processes

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US5815580A (en) * 1990-12-11 1998-09-29 Craven; Peter G. Compensating filters
GB2293078A (en) * 1994-09-09 1996-03-13 Yamaha Corp Howling remover composed of adjustable equalizers for attenuating complicated noise peaks
US6072879A (en) * 1996-06-17 2000-06-06 Yamaha Corporation Sound field control unit and sound field control device
US6125187A (en) * 1997-10-20 2000-09-26 Sony Corporation Howling eliminating apparatus
EP1001652A2 (en) * 1998-11-13 2000-05-17 Texas Instruments Incorporated Automatic loudspeaker equalizer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004077402A1 *

Also Published As

Publication number Publication date
JP3920233B2 (ja) 2007-05-30
US20060251264A1 (en) 2006-11-09
JP2004264377A (ja) 2004-09-24
EP1600941A1 (en) 2005-11-30
EP1600941B1 (en) 2010-04-28
US7787635B2 (en) 2010-08-31
DE602004026836D1 (de) 2010-06-10
WO2004077402A1 (ja) 2004-09-10

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